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Editorial Team
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Asked: 2026-05-15T22:09:33+00:00

[function.fopen]: failed to open stream: HTTP request failed! HTTP/1.1 401 Unauthorized I am periodically

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[function.fopen]: failed to open stream: HTTP request failed! HTTP/1.1 401 Unauthorized

I am periodically getting this error, i.e it is only happening at random times, any ideas what would cause this, i have checked my php.ini and allow_url_fopen is set to true.

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  1. Editorial Team

    10.4.2 401 Unauthorized

    The request requires user
    authentication. The response MUST
    include a WWW-Authenticate header
    field (section 14.47) containing a
    challenge applicable to the requested
    resource. The client MAY repeat the
    request with a suitable Authorization
    header field (section 14.8). If the
    request already included Authorization
    credentials, then the 401 response
    indicates that authorization has been
    refused for those credentials. If the
    401 response contains the same
    challenge as the prior response, and
    the user agent has already attempted
    authentication at least once, then the
    user SHOULD be presented the entity
    that was given in the response, since
    that entity might include relevant
    diagnostic information. HTTP access
    authentication is explained in “HTTP
    Authentication: Basic and Digest
    Access Authentication” [43].

    Status Code Definitions

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